Steam-boiler.



`lll'NiTnDA STATES PATENT Ormes.

JOHN J. TONKIN, OF OSWEGO, NEW YORK.

STEAM-BOILER.

SPECIFICATION forming' part 0f Letters Patent N 0. 678,530, dated. July16, 1901.

Application filed November 12, 1900. Serial No. 36,172. (No model.)

plication for Letters Patent, Serial No. 26,701,

filed August 13, 1900, and in said drawings- Figure 1 is a verticaltransverse section, and Fig. 2 is a horizontal transverse section online X X in Fig. 1.

In said prior application the construction of the boiler is such as tomake it particularly desirable for furnishing the propelling power forlocomobiles.

As set forth in the application referred to, the essential elements ofthe boiler are two upright shells, superposed one upon the other andconstituting, respectively, the steamchamber and water-chamber, and aflue-sheet or diaphragm secured to said shells at their junction. Inthat case the shells'are hanged outward at their junction and thehue-sheet or diaphragm is seated with its margin between said ilangesand riveted thereto.

The present invention` resides in an improved manner of uniting saidelements, the object being to increase the stiness and y strength of theboiler and also to lessen the the junction of said parts, as clearlyseen in- Fig. 1. By flanging the two shells outward, as stated, aprojection or ledge is produced on the exterior of the boiler, whichprojecthat owing to the peculiar construction of certain vehicle-framessaid projection or ledge is not useful for the purpose and, in fact, isobjectionable. Therefore another object of the present invention is todispense with said projection and unite the two shells and iuesheet ordiaphragm in such a manner as to produce a more rigid and strongerconst-rnc'- tion and at the same time improve the appearance of theboiler.

Referring tothe annexed drawings, A represents the lower shell, A theupper shell, B the diaphragm,which constitutes a Hue-sheet, and a a arethe usual flues or tubes, which are disposed vertically.

The shell A is superposed upon the lower shell A and constitutes thesteam-chamber, the lowervshell constituting the water-chamber. Saidshells arejoined telescopic and are rmly secured together by means ofrivets b b.

The flue-sheet or diaphragm B is preferably formed integral with the topof the lower shell and Vserves to guard against foaming of the boilerand to prevent the water from entering into the steam-space. However, itwill be seen that said flue-sheet may be formed of a separate plate andriveted to the shell in any suitable manner. Said flue-sheet ordiaphragm B is provided with a plurality of small perforations cc, whichallow the steam to enter into the chamber A.

The base of the lower shell A is formed with an outwardly projectingperforated flange d, to which is secured a iluesheet eby means of rivetsf f.

The top of the upper shell A is provided with a flue-sheet g, similar tothe flue-sheet e, and said flue-sheets coincide with the in term ediateflue-sheet or diaphragm B.

The iues or tubes d a extend through the three flue-sheets and arefirmly secured at their ends to the top and bottom flue-sheets.

h representsv the usual steam-pipe, which preferably extends from thecenter of the flue-sheet g, and t' is the usual water-pipe, whichcommunicates with the water-chamber A, preferably through the center ofthe iuesheet e.

C denotes a suitable case, which contains IOO the usual gasolene orotherburner. (Not necessary to be shown.) Said case may be attached to theboiler in any suitable manner. In this case I have shown an angle-ironn, secured to the shell A by means of rivets b' b and detachably securedto allange c' formed at the top of the case by means of bolts d d'.

The products of combustion from the burner pass through the tubes a aand effectually heat the water in the chamber A, and the generated steampasses through the diaphragm B in a dry state to the steam-chambel ry.

Vhat I claim is- 1. A steam boiler composed of upright shells superposedone upon the other and united by telescopic joint, the bottoni and topof the boiler consisting of flue-sheets, a coinciding Hue-sheetextending across the interior of the boiler at the Water-level thereofand provided with steam-passages, and lines extending through said threeuesheets and fastened to the bottom and top Hue-sheets as set forth.

2. A steam-boiler composed of an upright Water-chamber having its topand bottom plates perforated, said top plate being provided withsteam-passages, a steam-chamber joined telescopic t0 the exterior of theupper portion of the water-chamber and having its 3o top plateperforated, and flues extending through the perforations of said threeplates as set forth.

3. A steam boiler composed of upright shells superposed one upon theother and joined telescopic, a Hue sheet extending across the bottom ofthe lower shell, a coinciding fine-sheet extending across the top of theupper shell, and a similar [lue-sheet extending across the two shells atthe junction thereof, and provided with steam-passages, and fiuesextending through said three flue-sheets as set forth.

4. A steam -boiler composed of upright shells su perposed one upon theother, the lower shell extending near the water-line of the boiler andflanged at its base and formed at its top with a flue-sheet providedwith steam-passages, a flue-sheet fastened to the flanged base of saidshell, the upper shell joined telescopic to the lower shell and formedwith a line-sheet at its top, and tlues extending through said threeline-sheets as set forth and shown.

JOHN J. 'EONKIN [L. s]

Witnesses:

C. C. PLACE, A. N. RADCLIFFE.

